How To Skip Any Rock

Ever wonder what makes a rock skip? Wonder no more after watching
this video from the Brigham Young University's Fluid dynamics
lab. They use high speed imaging to show the science behind rock
skipping — with a few tips and techniques for successful and fun
summer science.

The researchers mention that the physics behind rock skipping
could be used by the Navy, so it's not all fun and games! There's
also a
Quora thread where the physics is explained in more detail.
Here are some more images from the video: